tommi@webrtc.org e1b84a0b2b Fix a race reported by tsan.
TSAN complains about this variable not having synchronized access, so
I'm using atomic operations on it instead.
There's no functional difference really though.

R=pbos@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/42539004

Cr-Commit-Position: refs/heads/master@{#8543}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8543 4adac7df-926f-26a2-2b94-8c16560cd09d
2015-03-01 08:29:44 +00:00
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